Murray stamped frame build "THE PATRIOT"

Alright so I've had this old Murray stamped frame for a little while now and just yesterday I finally got it running. It has a 19.5hp briggs opposed twin on it and a 5spd transaxle right now it goes about 15 cause it had a 3in on back and 3 on front. It may be getting a 6in front pulley and a 1 in or 3in rear. It will eventually become a military themed rat rod type mower with olive drab green and a white star or a deer skull on it not sure yet. I got this thing for 10$ from my buddy along with about 5 others. I got the name "THE PATRIOT" from promethiusedi. So here's some pics.


This when I got it I will get some more pics up later

nice. i wish i could find an engine like that. or stronger. lol. be careful about that stamped frame. should probably add some bracing to it

Ya I'm gonna add some strength! I have to pull start this beast!

lol. hopefully the compression release works.... im looking for a twin for my buggy project. something over 18hp

Wait compression release where?

ive heard that some of the bigger engines have somewhat of a compression release built in when your starting them. i may be wrong though. haha.

Alright I see it but these oppys are flatheads so not sure ha ha

oh..... duh. true that. lol

I took it for a ride down the road and it ran like poop and wouldn't stay running without me full force pulling the choke and does anyone know the air fuel mixture for the 19.5?

had the same problom for the last few days i bought a new carb and kept doing it replaced the vacume line for the fuel pump solved my probloms

k2500life wrote:

I took it for a ride down the road and it ran like poop and wouldn't stay running without me full force pulling the choke and does anyone know the air fuel mixture for the 19.5?

That indicates that you're running lean. There are many possible problems, but they all amount to the same thing. Not enough fuel for the air going in. Check fuel delivery, carb tuning, pump and pump actuation, cracked vacuum line to the pump, etc.

Do you have any idea if your carb has a fixed main jet, or an adjustable main? A few pics of the carb would help, but I suspect it's NOT adjustable.

Alright do I tore apart the carb and put a new suction fuel pump line on and wala! It's alive! I took it out for a ride with my buddy who was driving my widebody and got it stuck a few times and it goes really slow.

Put some tires on it and went for a short romp  

hows it do?

Haven't hit the mud pit yet only trails but a whole lot better

Built some stacks and flappers sounds awesome but once again the motor is getting fuel in oil and now it's coming out of the stacks like a geyser just turning it over

What type of compression does it have? May be just cut the gas off to it. Can you show more of the flappers? I was gonna buy some but there to much at tractor supply.

Ya when I get back from riding

So I get it running again and I pulley swapped it with a 7 in front 3 in rear it goes about 30 with a burnt up old belt so I need a new belt

Oh ya and it sounds sick!

Put up a video of it, id love to hear some stacks.

Alright I'll probably do it tomorrow

ahhhh damn bud if its shooting full out like that (happend before) its the fuel pump i highly recommend changing the oil and rebuilding the fuel pump then install a fuel shut off valve because these engines have pressure when tured off so the fuel pump keeps pumping fuel in